CN110460169A - Shaftless Generator and Axle Sensing Communication System - Google Patents

Abstract

The present invention proposes a shaftless generator and axle sensor communication system, wherein the shaftless generator includes: a stator, one end surface of the stator is provided with an accommodation groove, and a plurality of coils are embedded in the bottom plate of the accommodation groove The rotor can be detachably assembled with the external rotating shaft, the rotor includes a rotor disk, the rotor disk can be arranged on one side or both sides of the accommodating groove correspondingly, and the end surface of the rotor disk opposite to the accommodating groove is fixedly provided with a plurality of intervals Two adjacent permanent magnets have opposite polarities, and the rotor is set in a suspended state, wherein, when the circumscribed rotating shaft drives the rotor to rotate, multiple coils cut the magnetic field lines of the permanent magnets to generate electromotive force. Through the technical solution of the present invention, it can meet the installation requirements of various harsh installation environments, and drive the rotor to rotate through the external rotating shaft, so that the coil on the stator cuts the magnetic induction line, and generates current in the coil, so as to realize the specified power system. For power supply, there is no need to increase the power supply system separately.

Description

Shaftless Generator and Axle Sensing Communication System

technical field

The invention relates to the field of generators, in particular to a shaftless generator and an axle sensor communication system.

Background technique

In the related art, since freight cars often need to be grouped during operation, that is, the freight cars are not fixed on a train like the passenger cars, so there is no power supply system for the freight cars on the railway at present, resulting in the fact that the freight cars are generally not installed with any electrical appliances. Devices, such as sensors and communication components, cannot be equipped with a power supply system to supply power to the complete sensor system like the passenger car compartment, so as to ensure safe operation and realize continuous speed increase of passenger trains.

Since the train carriages do not have a power supply system, there are defects in the management of the railway carriages by the railway operation department, especially the management of the axles. The inaccurate control of the maintenance cycle results in the problematic axles being unable to be repaired in time, and the axles that have not yet reached the maintenance cycle may have been repaired, resulting in a waste of management costs.

In addition, due to the inability to realize real-time detection of the temperature and vibration of the train axle, the railway department also lacks effective informatization and automation means for the management of freight vehicles and their operation, which seriously hinders the operation efficiency of freight trains, and there are potential safety hazards that hinder The implementation of the speed-up plan for freight trains like passenger trains.

Contents of the invention

In order to solve at least one of the above technical problems, an object of the present invention is to provide a shaftless generator.

Another object of the present invention is to provide an axle sensing communication system.

In order to achieve the above object, the embodiment of the first aspect of the present invention proposes a shaftless generator, comprising: a stator, an accommodation groove is opened on one end surface of the stator, and a plurality of coils are embedded in the bottom plate of the accommodation groove; The rotor can be detachably assembled with the external rotating shaft. The rotor includes a rotor disk. The rotor disk can be arranged on one or both sides of the accommodating groove correspondingly. On the end surface of the rotor disk opposite to the accommodating groove, a plurality of spaced For permanent magnets, the polarities of two adjacent permanent magnets are opposite, and the rotor is set in a suspended state, wherein when the circumscribed rotating shaft drives the rotor to rotate, a plurality of coils cut the magnetic field lines of the permanent magnets to generate electromotive force.

In this technical solution, by setting an external rotating shaft and installing the rotor of the shaftless generator on the external rotating shaft, the rotation of the external rotating shaft drives the rotor to rotate. When assembling with the stator, the rotor part should be extended as far as possible into the accommodating groove. On the other hand, the rotor should be set in a disk-shaped structure. The rotor disk can be set on one side or both sides of the stator, and the rotor is suspended relative to the stator. In the prior art, it is necessary to fix the rotating shaft with interference fit on the rotor, or to install connecting parts such as bearings. On the one hand, since there are no wearing parts, it does not require frequent maintenance. On the other hand, the disc-shaped rotor Vertically installed on the external rotating shaft, so that the external rotating shaft drives the rotor disc to rotate. The rotor with a disc structure has higher rotation stability. The stator is installed at the designated position, and the relative assembly method with a gap between the rotor and the rotor can be realized. The method is simple, and the requirements for installation accuracy are low, so that it can meet the installation requirements of various harsh installation environments. On the other hand, by setting permanent magnets on the rotor, a closed magnetic field is generated between two adjacent permanent magnets The induction line drives the rotor disk to rotate through the external rotating shaft, so that the coil on the stator cuts the magnetic induction line, thereby generating current in the coil to realize the power supply to the specified power system, and there is no need to increase the power supply system separately.

In addition, the shaftless generator in the above embodiments provided by the present invention may also have the following additional technical features:

In the above technical solution, preferably, a first through hole is opened on the bottom plate; the rotor disk includes a first rotor disk and a second rotor disk which are oppositely arranged, and a first connecting column is fixedly arranged on the first rotor disk, and the first connecting column The post can be detachably connected to the second rotor disk through the through hole, wherein the permanent magnets are arranged in a built-in tangential manner, and the diameter of the first through hole is larger than that of the first connecting post.

In this technical solution, by opening a first through hole in the central area of the accommodating groove, the separated first rotor disk and the second rotor disk pass through the first through hole through the first connecting column provided between the two disks. After the connection, the coil on the stator is located between the permanent magnets on the two rotor disks. When the rotor disk rotates, a moving magnetic force field is formed. The magnetic force lines in the stator coil change alternately with the rotor disk, which is equivalent to making magnetic force lines Cutting motion, so that electromotive force can be generated in the coil, and output current can be generated. On the one hand, by setting rotor disks on both sides of the stator and permanent magnets on the rotor disks, the permanent magnets can be arranged tangentially inside, That is, the coils on the stator cut the magnetic induction lines on both sides to improve the power generation efficiency. Compared with the method of fixing on the external rotating shaft, the rotor is lighter in weight and has high stability, which will not affect the normal rotation of the external rotating shaft.

In any of the above technical solutions, preferably, the rotor disk includes a third rotor disk, a fourth rotor disk and a second connecting column arranged between the third rotor disk and the fourth rotor disk, and the third rotor disk 1. The fourth rotor disk and the second connecting column are integrally formed; the stator includes a first half of the stator disk and a second half of the stator disk that can be spliced with each other. The stator plate is provided with a second semicircular hole to form a second through hole after splicing, wherein the permanent magnets are arranged tangentially inside, and the diameter of the second through hole is larger than the diameter of the second connecting column.

In this technical solution, the rotor is still formed by two rotor disks. The difference from the above arrangement is that the two rotor disks (the third rotor disk and the fourth rotor disk and the second connecting column between them) are integrated structure, and correspondingly, the stator is constructed as two half-stator plates that can be spliced together, and semicircular central holes are respectively set on the two half-stator plates to form the second through hole when the syllable is a circular stator plate. On the one hand, by arranging rotor disks on both sides of the stator and permanent magnets on the rotor disks, the permanent magnets can be arranged in a built-in tangential manner, that is, the coils on the stator cut the magnetic induction lines on both sides respectively, In order to improve the power generation efficiency, on the other hand, by setting the rotor as two disk-shaped rotor disks, compared with the cylindrical structure rotor in the prior art, the method of fixing on the external rotating shaft is simpler, and the weight of the rotor is lighter. Lightweight and highly stable, it will not affect the normal rotation of the external shaft. On the other hand, the setting method is more flexible.

In any of the above technical solutions, preferably, there is one rotor disk, the permanent magnets on the rotor disk are arranged in a built-in tangential type, the rotor disk can extend axially into the accommodating groove, and the permanent magnets and coils Corresponding settings in the radial direction.

In this technical solution, only one rotor disk can also be used, and a plurality of permanent magnets arranged in a tangential manner are also arranged on the rotor disk. Compared with the above two arrangements, on the one hand, there is no need to set up a center on the stator. holes, the structure is simpler, on the other hand, relatively, the power generation efficiency is also lower.

In any of the above technical solutions, preferably, a magnetically permeable magnetic core is further arranged in the coil.

In this technical solution, by adding a magnetically permeable magnetic core to each coil, since the magnetic core has the advantages of high magnetic permeability and high magnetic flux density, the electromagnetic induction intensity can be improved, the voltage conversion efficiency can be improved, and it is beneficial to improve the output power of the generator.

In any of the above technical solutions, preferably, both the stator and the rotor are magnetically conductive parts.

In this technical solution, both the stator and the rotor are made of magnetically permeable materials. The magnetically permeable materials not only have high magnetic permeability, but also can increase the saturation magnetic induction intensity, and can also improve the voltage conversion efficiency to increase the output power of the generator.

In any of the above technical solutions, preferably, there is a first specified clearance in the axial direction between the rotor and the stator; and there is a second specified clearance in the radial direction between the rotor and the stator.

In this technical solution, by defining the first specified gap in the axial direction between the rotor and the stator, and defining the second specified gap in the radial direction between the rotor and the stator, the axial gap between the rotor structure and the stator structure is ensured. There is sufficient clearance between the corresponding positions in the radial direction, so that the difficulty of assembly can be further reduced, and even if the coaxial arrangement cannot be realized between the rotor and the circumscribed rotating shaft, it can also ensure that the rotor has the most sufficient rotation space.

In any of the above technical solutions, preferably, the edge area of the end surface of the rotor disk is uniformly provided with a plurality of first fixing holes along the circumferential direction, and the plurality of first fixing holes cooperate with the fixing parts to fix the rotor on the end of the circumscribed rotating shaft. part; the stator is also provided with a flange structure, the flange structure is connected with the accommodating groove along the circumferential direction, and a plurality of second fixing holes are evenly opened on the flange structure along the circumferential direction, and the plurality of second fixing holes cooperate with the fixing parts Fix the stator in the specified position.

In this technical solution, a plurality of first fixing holes are evenly opened in the peripheral area of the rotor disk along the circumferential direction, and a matching hole corresponding to the circumscribed rotating shaft is opened to match the first fixing holes, and the end faces are fitted and fixedly connected. The method is simple and the installation strength is high. By uniformly opening a plurality of second fixing holes along the circumferential direction on the flange structure of the stator, and correspondingly opening matching holes matching with the second fixing holes at the designated position, the flange structure and the designated position are realized. The fixed assembly can also ensure the installation strength.

Wherein, the fixing member may be a screw or a rivet.

The embodiment of the second aspect of the present invention proposes an axle sensor communication system, including: the shaftless generator described in any one of the technical solutions of the first aspect of the present invention, wherein the externally connected rotating shaft is the axle of the railway transportation equipment, The rotor is driven by the axle to rotate, and the designated position is the designated position on the frame of the railway transportation equipment; the control circuit board can be electrically connected with the shaftless generator, so as to supply power to the control circuit board through the operation of the shaftless generator, and the control circuit board A controller is provided; a sensor component can be electrically connected to the controller; a communication component can be electrically connected to the controller, and the communication component is used to transmit the sensing information collected by the sensor component.

In the above technical solution, preferably, by setting a shaftless generator, and the shaftless generator can be fixedly connected with the axle of the railway transportation equipment, so that the rotor can be directly driven by the axle, combined with the stator arranged on the frame, to realize The power generation function is used to supply power to the control circuit board and the sensor components. On the one hand, it realizes the establishment of the power supply system in the harsh environment of the train carriage, especially the truck carriage. The transmission realizes the real-time management of the freight cars by the railway operation department.

On the other hand, through the real-time detection of the temperature and vibration frequency of the train axle, the railway department has realized the effective informatization and automatic management of the freight train and its operation, which is conducive to improving the operating efficiency of the freight train and reducing potential safety hazards.

In this technical solution, the sensor component includes at least one of a temperature sensor, a vibration sensor, a mileage sensor and a position sensor.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Figure 1 shows a side sectional view of a shaftless generator according to one embodiment of the present invention;

Figure 2 shows a front view of the shaftless generator in Figure 1;

Figure 3 shows a side sectional view of a shaftless generator according to another embodiment of the present invention;

Figure 4 shows a front view of a shaftless generator according to yet another embodiment of the present invention;

Fig. 5 shows a side sectional view of a shaftless generator according to yet another embodiment of the present invention.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 5 is:

102 stator, 1022 accommodation slot, 1024 coil, 1026 first through hole, 104 rotor, 1042 permanent magnet, 1044 magnetic induction line, 1046 first rotor disk, 1048 second rotor disk, 1050 screw, 1028 first half stator disk , 1030 second half stator disc, 1052 fifth rotor disc, 1054 first fixing hole, 1032 flange structure, 1034 second fixing hole.

Detailed ways

In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

Shaftless generators according to some embodiments of the present invention are described below with reference to FIGS. 1 to 5 .

As shown in Figures 1 to 5, the shaftless generator according to the embodiment of the present invention includes: a stator 102, an accommodating groove 1022 is opened on one end surface of the stator 102, and multiple A coil 1024; the rotor 104 can be detachably assembled with the external rotating shaft, the rotor 104 includes a rotor disk, the rotor disk can be arranged on one side or both sides of the accommodation groove 1022 correspondingly, and the end surface of the rotor disk opposite to the accommodation groove 1022 A plurality of permanent magnets 1042 arranged at intervals are fixedly arranged, and the polarities of two adjacent permanent magnets 1042 are opposite, and the rotor 104 is set in a suspended state, wherein, when the rotor 104 rotates driven by the externally connected rotating shaft, the plurality of coils 1024 cut The magnetic lines of force of the permanent magnet 1042 are used to generate electromotive force.

In this embodiment, by setting the circumscribed rotating shaft and installing the rotor 104 of the shaftless generator on the circumscribed rotating shaft, the rotation of the circumscribed rotating shaft drives the rotor 104 to rotate. When assembling the rotor 104 and the stator 102, the rotor 104 should be extended as far as possible into the accommodating groove 1022; side, and the rotor 104 is suspended relative to the stator 102. Compared with the prior art that requires an interference fit on the rotor 104 to fix the rotating shaft, or provide connecting parts such as bearings, on the one hand, because there are no large-volume wear parts, the No need for frequent maintenance. On the other hand, the disc-shaped rotor 104 is installed vertically on the external rotating shaft, so that the external rotating shaft drives the rotor disc to rotate. The disc-shaped rotor 104 has higher rotation stability. The stator 102 is installed on Designate the position, and can realize the relative assembly method with a gap between the rotor 104, the installation method is simple, and the requirements for installation accuracy are low, so that it can meet the installation requirements of a variety of relatively harsh installation environments. On the other hand, through the Permanent magnets 1042 are arranged on the rotor 104, and closed magnetic field lines 1044 are generated between two adjacent permanent magnets 1042, and the rotor disk is driven to rotate through the externally connected rotating shaft, so that the coil 1024 on the stator 102 cuts the magnetic field lines 1044, thereby in the coil 1024 to generate current to supply power to the specified power system, and there is no need to increase the power supply system separately.

Embodiment one:

As shown in FIG. 3 , in the above embodiment, preferably, a first through hole 1026 is opened on the bottom plate; the rotor disk includes a first rotor disk 1046 and a second rotor disk 1048 oppositely arranged, and the first rotor disk 1046 is fixed A first connecting column is provided, and the first connecting column can be detachably connected to the second rotor disk 1048 through a through hole, wherein the permanent magnets 1042 are arranged in a built-in tangential manner, and the diameter of the first through hole 1026 is larger than that of the first connecting column. The diameter of the column.

In this embodiment, by opening the first through hole 1026 in the central area of the accommodation groove 1022, the separated first rotor disk 1046 and the second rotor disk 1048 can pass through through the first connecting column provided between the two disks. The first through hole 1026 is connected by a plurality of circumferentially arranged screws 1050. The coil 1024 on the stator 102 is located between the permanent magnets on the two rotor discs. When the rotor discs rotate, a moving magnetic force field is formed. The stator 102 The magnetic force lines in the coil 1024 change alternately with the rotor disk, which is equivalent to performing a magnetic force line cutting motion, so that an electromotive force can be generated in the coil 1024 and an output current can be generated. On the one hand, by setting the rotor disks on both sides of the stator 102, and Permanent magnets 1042 are arranged on the rotor discs, and the permanent magnets 1042 can be arranged in a tangential way, that is, the coils 1024 on the stator 102 respectively cut the magnetic lines 1044 on both sides to improve the power generation efficiency. On the other hand, through The rotor 104 is set as two disk-shaped rotor disks. Compared with the cylindrical-shaped rotor 104 in the prior art, the method of fixing on the circumscribed rotating shaft is simpler. The weight of the rotor 104 is relatively light and the stability is high. It will not affect the normal rotation of the external shaft.

Embodiment two:

As shown in FIG. 4, in any of the above embodiments, preferably, the rotor disk includes a third rotor disk, a fourth rotor disk and a second connection between the third rotor disk and the fourth rotor disk. column, the third rotor disk, the fourth rotor disk and the second connecting column are integrally formed; the stator 102 includes a first half stator disk 1028 and a second half stator disk 1230 that can be spliced with each other, on the first half stator disk 1028 A first semicircular hole is provided, and a second semicircular hole is provided in the second half of the stator plate 1230 to form a second through hole after splicing, wherein the permanent magnets 1042 are arranged in a built-in tangential manner, and the diameter of the second through hole is larger than The diameter of the second connecting post.

In this embodiment, the rotor 104 is still formed by two rotor disks. The difference from the above arrangement is that the two rotor disks (the third rotor disk and the fourth rotor disk and the second connecting column between them) are The stator 102 is an integrated structure, and the corresponding stator 102 is constructed as two semi-stator plates that can be spliced together. The semicircle center holes are respectively opened on the two semi-stator plates to form the second when the syllable is a circular stator 102 plate. Through holes, on the one hand, by setting the rotor disks on both sides of the stator 102, and the permanent magnets 1042 are arranged on the rotor disks, the permanent magnets 1042 can be arranged in a tangential way, that is, the coils 1024 on the stator 102 are respectively The magnetic induction lines 1044 on both sides are cut to improve power generation efficiency. On the other hand, by setting the rotor 104 as two disc-shaped rotor discs, compared with the cylindrical rotor 104 in the prior art, it is fixed on the The method on the external rotating shaft is simpler, the weight of the rotor 104 is relatively light, and the stability is high, and it will not affect the normal rotation of the external rotating shaft. On the other hand, the setting method is more flexible.

Embodiment three:

As shown in Fig. 5, in any of the above-mentioned embodiments, preferably, the number of rotor discs is one, that is, the fifth rotor disc 1052, and the permanent magnets 1042 on the fifth rotor disc 1052 are arranged in a built-in tangential manner. The five-rotor disk 1052 can extend into the accommodation groove 1022 in the axial direction, and the permanent magnet 1042 and the coil 1024 are arranged correspondingly in the radial direction.

In this embodiment, only one fifth rotor disk 1052 may be used, and a plurality of permanent magnets 1042 arranged in a tangential manner are also arranged on the fifth rotor disk 1052. Compared with the above two arrangements, on the one hand, There is no need to open a central hole on the stator 102, and the structure is simpler. On the other hand, relatively, the power generation efficiency is relatively low.

In any of the above embodiments, preferably, the coil 1024 is further provided with a magnetically permeable core.

In this embodiment, by adding a magnetically permeable magnetic core to each coil 1024, since the magnetic core has the advantages of high magnetic permeability and high magnetic flux density, it can increase the electromagnetic induction intensity and improve the voltage conversion efficiency, which is beneficial to Increase the output power of the generator.

In any of the above embodiments, preferably, both the stator 102 and the rotor 104 are magnetically conductive parts.

In this embodiment, the stator 102 and the rotor 104 are both made of magnetically permeable materials. The magnetically permeable materials not only have high magnetic permeability, but also can increase the saturation magnetic induction intensity, and can also improve the voltage conversion efficiency to increase the output of the generator. power.

In any of the above embodiments, preferably, there is a first specified clearance in the axial direction between the rotor 104 and the stator 102 ; and there is a second specified clearance in the radial direction between the rotor 104 and the stator 102 .

In this embodiment, by defining the axial first specified gap between the rotor 104 and the stator 102, and defining the second specified gap in the radial direction between the rotor 104 and the stator 102, to ensure that the structure of the rotor 104 is consistent with the stator 102 There are sufficient gaps between the corresponding positions in the axial and radial directions between the structures, so that the difficulty of assembly can be further reduced, and even if the coaxial arrangement cannot be realized between the rotor 104 and the circumscribed rotating shaft, it can also ensure that the rotor 104 has the most sufficient space. Rotate space.

In any of the above-mentioned embodiments, preferably, a plurality of first fixing holes 1054 are evenly opened in the edge region of the end surface of the rotor disk along the circumferential direction, and the plurality of first fixing holes 1054 fix the rotor 104 on the outer circumference by cooperating with the fixing parts. The end of the rotating shaft; the stator 102 is also provided with a flange structure 1032, the flange structure 1032 is connected with the accommodating groove 1022 along the circumferential direction, and a plurality of second fixing holes 1034 are evenly opened on the flange structure 1032 along the circumferential direction, and a plurality of The second fixing hole 1034 fixes the stator 102 at a designated position by cooperating with a fixing member.

In this embodiment, a plurality of first fixing holes 1054 are evenly opened on the edge area of the rotor disk along the circumferential direction, and a matching hole matching with the first fixing holes 1054 is opened in the corresponding circumscribed rotating shaft, and the end faces are fitted and fixedly connected. , the installation method is simple, and the installation strength is high. By uniformly opening a plurality of second fixing holes 1034 along the circumferential direction on the flange structure 1032 of the stator 102, and correspondingly opening matching holes matching with the second fixing holes 1034 at designated positions, realizing The fixed assembly of the flange structure 1032 with the designated position can also ensure the installation strength.

Wherein, the fixing member may be a screw 1050 or a rivet.

The axle sensing communication system according to the embodiment of the present invention includes: the shaftless generator described in any one of the embodiments of the first aspect of the present invention, wherein the external rotating shaft is the axle of the railway transportation equipment, so that the axle drives the rotor 104 rotations, the designated position is the designated position on the frame of the railway traffic equipment; the control circuit board can be electrically connected with the shaftless generator, so as to supply power to the control circuit board through the operation of the shaftless generator, and the control circuit board is provided with a controller The sensor component can be electrically connected to the controller; the communication component can be electrically connected to the controller, and the communication component is used to transmit the sensing information collected by the sensor component.

In the above embodiment, preferably, by setting a shaftless generator, and the shaftless generator can be fixedly connected with the axle of the railway transportation equipment, so as to directly drive the rotor 104 to rotate by the axle, combined with the stator 102 arranged on the frame , to realize the power generation function to supply power to the control circuit board and sensor components. On the one hand, it realizes the establishment of the power supply system in the harsh environment of the train carriage, especially the truck carriage, and collects the operating data of the train carriage through the sensor component. The components are transmitted to realize the real-time management of the freight cars by the railway operation department.

On the other hand, through the real-time detection of the temperature and vibration frequency of the train axle, the railway department has realized the effective informatization and automatic management of the freight train and its operation, which is conducive to improving the operating efficiency of the freight train and reducing potential safety hazards.

Specifically, as shown in Figure 1, the rotor 104 and the stator 102 of the generator are installed on the end of the axle and the frame respectively, so that the axle drives the rotor 104 to rotate, and the frame fixes the stator 102. In order to improve the power generation efficiency, the rotor 104 can include two rotor discs, the stator 102 is sleeved between two rotors 104, without any contact between them, the permanent magnet 1042 is installed on the rotor 104, and the coil 1024 is installed on the stator 102, when the rotor 104 drives the permanent magnet 1042 When rotating, an alternating magnetic field will appear in the coil 1024, so an electromotive force will be generated in the coil 1024.

In order to fix the stator 102 non-contact between two rotor disks, as shown in FIG. 3 , the rotor 104 is composed of a first rotor disk 1046 and a second rotor disk 1048. Fix it on the end surface of the axle, then put the stator 102 on it, and fix the stator 102 on the vehicle frame, and finally fix the second rotor disc 1048 on the first rotor disc 1046 through screws 1050 .

In order to realize that the stator 102 is sheathed between the two rotor disks in a non-contact manner, as shown in FIG. 4 , the two rotor disks are integrated, and the stator 102 is composed of a first half stator disk 1028 and a second half stator disk 1230 . First fix the rotor 104 on the end surface of the axle; then fasten the first half stator disk 1028 and the second half stator disk 1230 and fix them on the vehicle frame to realize a shaftless and bearingless generator structure.

If the power consumption requirement of the axle sensing communication system is relatively low, the requirement for the output power of the generator can be reduced. As shown in FIG. 5 , the structure is further simplified, and the rotor 104 is a fifth rotor disc with a single disc.

Considering that the applied axle sensing communication system is a microelectronic system with relatively low power consumption, the requirements for the power output of the generator are not high. Based on such an objective reality, the design proposed by the present invention is to make the gap between the rotor 104 and the stator 102 as large as possible, so as to be easy to install and more practical and feasible.

In addition, the axis center of the rotor 104 and the axis center of the axle do not need to be absolutely coincident, only the concentric deviation between the two is required to be smaller than the gap between the rotor 104 and the stator 102 . There is no contact between the rotor 104 and the stator 102 . The gap between the stator 102 and the rotor 104 is relatively large, so the requirements for their installation accuracy are not high.

In order to allow more magnetic lines of force to pass through the coils 1024 of the stator 102 , a magnetic core of magnetically permeable material can be added to each coil 1024 . Moreover, the stator 102 and the rotor 104 are made of magnetically permeable materials, which will also increase the density of the passing magnetic force lines, thereby increasing the output power of the generator.

In this embodiment, the sensor component includes at least one of a temperature sensor, a vibration sensor, a mileage sensor and a position sensor.

The shaftless generator is mainly composed of two parts, the rotor 104 and the stator 102. The rotor 104 can be fixed on the end surface of the axle by using screws 1050 through the first fixing hole 1054, and the stator 102 can also be fixed on the vehicle shaft by using the same screw 1050 through the second fixing hole 1034. On the frame, the rotor 104 and the stator 102 can be considered to be buckled together in a non-contact manner, and the rotor 104 rotates together with the axle, and the generated magnetic field lines 1044 will cut the coil 1024 on the stator 102, thereby making the stator 102 coil 1024 generates an electromotive force.

By arranging a larger gap between the rotor 104 and the stator 102 during assembly, the axis of the rotor 104 and the axis of the axle do not need to be absolutely coincident, only requiring that the concentric deviation between the two is smaller than that between the rotor 104 and the stator 102 The gap is enough, there is no contact between the rotor 104 and the stator 102, and the gap between the stator 102 and the rotor 104 is relatively large, so high installation accuracy is not required.

In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two above, unless expressly limited otherwise. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear" etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation of the present invention.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A shaftless generator, characterized in that, comprising: A stator, one end surface of the stator is provided with an accommodation groove, and a plurality of coils are embedded in the bottom plate of the accommodation groove; The rotor can be detachably assembled with the circumscribed rotating shaft, and the rotor includes a rotor disk, which can be correspondingly arranged on one side or both sides of the accommodating groove, and on the rotor disk opposite to the accommodating groove A plurality of spaced permanent magnets are fixedly arranged on the end face, the polarities of two adjacent permanent magnets are opposite, and the rotor is suspended, Wherein, when the circumscribed rotating shaft drives the rotor to rotate, the plurality of coils cut the magnetic field lines of the permanent magnets to generate electromotive force. 2. The shaftless generator according to claim 1, characterized in that, A first through hole is opened on the bottom plate; The rotor disk includes a first rotor disk and a second rotor disk that are oppositely arranged, and a first connecting column is fixedly arranged on the first rotor disk, and the first connecting column can pass through the through hole and the first connecting column. The two rotor discs are detachably connected, Wherein, the diameter of the first through hole is larger than the diameter of the first connecting post. 3. The shaftless generator according to claim 1, characterized in that, The rotor disk includes a third rotor disk, a fourth rotor disk and a second connecting column arranged between the third rotor disk and the fourth rotor disk, the third rotor disk, the fourth rotor disk The fourth rotor disc and the second connecting column are integrally formed; The stator includes a first half stator disk and a second half stator disk that can be spliced with each other, the first half stator disk is provided with a first semicircular hole, and the second half stator disk is provided with a second semicircular hole, to form a second via hole after splicing, Wherein, the diameter of the second through hole is larger than the diameter of the second connecting post. 4. The shaftless generator according to claim 1, characterized in that, The number of the rotor disk is one, and can extend into the accommodating slot, and the permanent magnet is arranged correspondingly to the coil in the radial direction. 5. The shaftless generator according to claim 1, characterized in that, A magnetic permeable core is also arranged in the coil. 6. The shaftless generator according to claim 1, characterized in that, Both the stator and the rotor are magnetically conductive parts. 7. The shaftless generator of claim 4, wherein: There is a first specified clearance in the axial direction between the rotor and the stator; There is a second prescribed gap in the radial direction between the rotor and the stator. 8. A shaftless generator according to any one of claims 1 to 7, characterized in that The edge area of the end surface of the rotor disk is evenly provided with a plurality of first fixing holes along the circumferential direction, and the plurality of first fixing holes cooperate with fixing parts to fix the rotor on the end of the circumscribed rotating shaft; A flange structure is also provided on the stator, and the flange structure is connected to the accommodating groove along the circumferential direction, and a plurality of second fixing holes are evenly opened on the flange structure along the circumferential direction, and the plurality of first The two fixing holes fix the stator at a specified position by cooperating with the fixing piece. 9. An axle sensing communication system suitable for traffic equipment, characterized in that it comprises: The shaftless generator according to any one of claims 1 to 8, wherein the circumscribed rotating shaft is the axle of the railway transportation equipment, so that the rotor is driven to rotate by the axle, and the specified position is the a designated location on the frame of the above-mentioned railway traffic equipment; A control circuit board, capable of being electrically connected to the shaftless generator, so as to supply power to the control circuit board through the operation of the shaftless generator, and a controller is arranged on the control circuit board; a sensor assembly capable of being electrically connected to the controller; The communication component can be electrically connected with the controller, and the communication component is used to transmit the sensing information collected by the sensor component. 10. The axle sensing communication system of claim 9, wherein: The sensor assembly includes at least one of a temperature sensor, a shock sensor, an mileage sensor and a position sensor.